A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.
Classification: Military equipments not identified by kind
NSN 2925-01-224-1885
NSN 6650-01-536-0737
NSN 7035-00-179-3924
NSN 5835-00-518-4507
NSN 6145-01-508-7488
NSN 6135-01-631-4483
NSN 5990-01-351-4621
NSN 5960-00-113-0019
NSN 7035-01-252-5919
NSN 5945-01-035-7145
NSN 6150-00-583-9878
NSN 6645-01-212-9474